Unlike some videos that are circulating your Facebook feed, this one may actually save your life some day.

We’ve all seen plenty of survival shows to know that starting a fire in the wilderness can mean a difference between life and death. The most common way of making fire when you have no matches is by rubbing two dry sticks together, but it is labor intensive and sometimes finding dry wood is impossible so this guy found a way to make a battery out of lemon and some hardware and then shorting it out.

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